Initial load

2025-08-25 22:04:51 +02:00 · 2007-12-01 00:00:00 +00:00 · 2007-12-01 00:00:00 +00:00 · 8153779ad3
commit 8153779ad3
parent 686d76f772
2894 changed files with 911801 additions and 0 deletions
--- a/hotspot/src/share/vm/runtime/java.cpp
+++ b/hotspot/src/share/vm/runtime/java.cpp
@ -0,0 +1,593 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+#include "incls/_precompiled.incl"
+#include "incls/_java.cpp.incl"
+
+HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown);
+
+#ifndef PRODUCT
+
+// Statistics printing (method invocation histogram)
+
+GrowableArray<methodOop>* collected_invoked_methods;
+
+void collect_invoked_methods(methodOop m) {
+  if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) {
+    collected_invoked_methods->push(m);
+  }
+}
+
+
+GrowableArray<methodOop>* collected_profiled_methods;
+
+void collect_profiled_methods(methodOop m) {
+  methodHandle mh(Thread::current(), m);
+  if ((m->method_data() != NULL) &&
+      (PrintMethodData || CompilerOracle::should_print(mh))) {
+    collected_profiled_methods->push(m);
+  }
+}
+
+
+int compare_methods(methodOop* a, methodOop* b) {
+  // %%% there can be 32-bit overflow here
+  return ((*b)->invocation_count() + (*b)->compiled_invocation_count())
+       - ((*a)->invocation_count() + (*a)->compiled_invocation_count());
+}
+
+
+void print_method_invocation_histogram() {
+  ResourceMark rm;
+  HandleMark hm;
+  collected_invoked_methods = new GrowableArray<methodOop>(1024);
+  SystemDictionary::methods_do(collect_invoked_methods);
+  collected_invoked_methods->sort(&compare_methods);
+  //
+  tty->cr();
+  tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff);
+  tty->cr();
+  tty->print_cr("____Count_(I+C)____Method________________________Module_________________");
+  unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0,
+      synch_total = 0, nativ_total = 0, acces_total = 0;
+  for (int index = 0; index < collected_invoked_methods->length(); index++) {
+    methodOop m = collected_invoked_methods->at(index);
+    int c = m->invocation_count() + m->compiled_invocation_count();
+    if (c >= MethodHistogramCutoff) m->print_invocation_count();
+    int_total  += m->invocation_count();
+    comp_total += m->compiled_invocation_count();
+    if (m->is_final())        final_total  += c;
+    if (m->is_static())       static_total += c;
+    if (m->is_synchronized()) synch_total  += c;
+    if (m->is_native())       nativ_total  += c;
+    if (m->is_accessor())     acces_total  += c;
+  }
+  tty->cr();
+  total = int_total + comp_total;
+  tty->print_cr("Invocations summary:");
+  tty->print_cr("\t%9d (%4.1f%%) interpreted",  int_total,    100.0 * int_total    / total);
+  tty->print_cr("\t%9d (%4.1f%%) compiled",     comp_total,   100.0 * comp_total   / total);
+  tty->print_cr("\t%9d (100%%)  total",         total);
+  tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total,  100.0 * synch_total  / total);
+  tty->print_cr("\t%9d (%4.1f%%) final",        final_total,  100.0 * final_total  / total);
+  tty->print_cr("\t%9d (%4.1f%%) static",       static_total, 100.0 * static_total / total);
+  tty->print_cr("\t%9d (%4.1f%%) native",       nativ_total,  100.0 * nativ_total  / total);
+  tty->print_cr("\t%9d (%4.1f%%) accessor",     acces_total,  100.0 * acces_total  / total);
+  tty->cr();
+  SharedRuntime::print_call_statistics(comp_total);
+}
+
+void print_method_profiling_data() {
+  ResourceMark rm;
+  HandleMark hm;
+  collected_profiled_methods = new GrowableArray<methodOop>(1024);
+  SystemDictionary::methods_do(collect_profiled_methods);
+  collected_profiled_methods->sort(&compare_methods);
+
+  int count = collected_profiled_methods->length();
+  if (count > 0) {
+    for (int index = 0; index < count; index++) {
+      methodOop m = collected_profiled_methods->at(index);
+      ttyLocker ttyl;
+      tty->print_cr("------------------------------------------------------------------------");
+      //m->print_name(tty);
+      m->print_invocation_count();
+      tty->cr();
+      m->print_codes();
+    }
+    tty->print_cr("------------------------------------------------------------------------");
+  }
+}
+
+void print_bytecode_count() {
+  if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
+    tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());
+  }
+}
+
+AllocStats alloc_stats;
+
+
+
+// General statistics printing (profiling ...)
+
+void print_statistics() {
+
+#ifdef ASSERT
+
+  if (CountRuntimeCalls) {
+    extern Histogram *RuntimeHistogram;
+    RuntimeHistogram->print();
+  }
+
+  if (CountJNICalls) {
+    extern Histogram *JNIHistogram;
+    JNIHistogram->print();
+  }
+
+  if (CountJVMCalls) {
+    extern Histogram *JVMHistogram;
+    JVMHistogram->print();
+  }
+
+#endif
+
+  if (MemProfiling) {
+    MemProfiler::disengage();
+  }
+
+  if (CITime) {
+    CompileBroker::print_times();
+  }
+
+#ifdef COMPILER1
+  if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) {
+    FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics);
+    Runtime1::print_statistics();
+    Deoptimization::print_statistics();
+    nmethod::print_statistics();
+  }
+#endif /* COMPILER1 */
+
+#ifdef COMPILER2
+  if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) {
+    FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics);
+    Compile::print_statistics();
+#ifndef COMPILER1
+    Deoptimization::print_statistics();
+    nmethod::print_statistics();
+#endif //COMPILER1
+    SharedRuntime::print_statistics();
+    os::print_statistics();
+  }
+
+  if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics) {
+    OptoRuntime::print_named_counters();
+  }
+
+  if (TimeLivenessAnalysis) {
+    MethodLiveness::print_times();
+  }
+#ifdef ASSERT
+  if (CollectIndexSetStatistics) {
+    IndexSet::print_statistics();
+  }
+#endif // ASSERT
+#endif // COMPILER2
+  if (CountCompiledCalls) {
+    print_method_invocation_histogram();
+  }
+  if (ProfileInterpreter || Tier1UpdateMethodData) {
+    print_method_profiling_data();
+  }
+  if (TimeCompiler) {
+    COMPILER2_PRESENT(Compile::print_timers();)
+  }
+  if (TimeCompilationPolicy) {
+    CompilationPolicy::policy()->print_time();
+  }
+  if (TimeOopMap) {
+    GenerateOopMap::print_time();
+  }
+  if (ProfilerCheckIntervals) {
+    PeriodicTask::print_intervals();
+  }
+  if (PrintSymbolTableSizeHistogram) {
+    SymbolTable::print_histogram();
+  }
+  if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
+    BytecodeCounter::print();
+  }
+  if (PrintBytecodePairHistogram) {
+    BytecodePairHistogram::print();
+  }
+
+  if (PrintCodeCache) {
+    MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
+    CodeCache::print();
+  }
+
+  if (PrintCodeCache2) {
+    MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
+    CodeCache::print_internals();
+  }
+
+  if (PrintClassStatistics) {
+    SystemDictionary::print_class_statistics();
+  }
+  if (PrintMethodStatistics) {
+    SystemDictionary::print_method_statistics();
+  }
+
+  if (PrintVtableStats) {
+    klassVtable::print_statistics();
+    klassItable::print_statistics();
+  }
+  if (VerifyOops) {
+    tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count());
+  }
+
+  print_bytecode_count();
+  if (WizardMode) {
+    tty->print("allocation stats: ");
+    alloc_stats.print();
+    tty->cr();
+  }
+
+  if (PrintSystemDictionaryAtExit) {
+    SystemDictionary::print();
+  }
+
+  if (PrintBiasedLockingStatistics) {
+    BiasedLocking::print_counters();
+  }
+
+#ifdef ENABLE_ZAP_DEAD_LOCALS
+#ifdef COMPILER2
+  if (ZapDeadCompiledLocals) {
+    tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count);
+    tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count);
+  }
+#endif // COMPILER2
+#endif // ENABLE_ZAP_DEAD_LOCALS
+}
+
+#else // PRODUCT MODE STATISTICS
+
+void print_statistics() {
+
+  if (CITime) {
+    CompileBroker::print_times();
+  }
+#ifdef COMPILER2
+  if (PrintPreciseBiasedLockingStatistics) {
+    OptoRuntime::print_named_counters();
+  }
+#endif
+  if (PrintBiasedLockingStatistics) {
+    BiasedLocking::print_counters();
+  }
+}
+
+#endif
+
+
+// Helper class for registering on_exit calls through JVM_OnExit
+
+extern "C" {
+    typedef void (*__exit_proc)(void);
+}
+
+class ExitProc : public CHeapObj {
+ private:
+  __exit_proc _proc;
+  // void (*_proc)(void);
+  ExitProc* _next;
+ public:
+  // ExitProc(void (*proc)(void)) {
+  ExitProc(__exit_proc proc) {
+    _proc = proc;
+    _next = NULL;
+  }
+  void evaluate()               { _proc(); }
+  ExitProc* next() const        { return _next; }
+  void set_next(ExitProc* next) { _next = next; }
+};
+
+
+// Linked list of registered on_exit procedures
+
+static ExitProc* exit_procs = NULL;
+
+
+extern "C" {
+  void register_on_exit_function(void (*func)(void)) {
+    ExitProc *entry = new ExitProc(func);
+    // Classic vm does not throw an exception in case the allocation failed,
+    if (entry != NULL) {
+      entry->set_next(exit_procs);
+      exit_procs = entry;
+    }
+  }
+}
+
+// Note: before_exit() can be executed only once, if more than one threads
+//       are trying to shutdown the VM at the same time, only one thread
+//       can run before_exit() and all other threads must wait.
+void before_exit(JavaThread * thread) {
+  #define BEFORE_EXIT_NOT_RUN 0
+  #define BEFORE_EXIT_RUNNING 1
+  #define BEFORE_EXIT_DONE    2
+  static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;
+
+  // Note: don't use a Mutex to guard the entire before_exit(), as
+  // JVMTI post_thread_end_event and post_vm_death_event will run native code.
+  // A CAS or OSMutex would work just fine but then we need to manipulate
+  // thread state for Safepoint. Here we use Monitor wait() and notify_all()
+  // for synchronization.
+  { MutexLocker ml(BeforeExit_lock);
+    switch (_before_exit_status) {
+    case BEFORE_EXIT_NOT_RUN:
+      _before_exit_status = BEFORE_EXIT_RUNNING;
+      break;
+    case BEFORE_EXIT_RUNNING:
+      while (_before_exit_status == BEFORE_EXIT_RUNNING) {
+        BeforeExit_lock->wait();
+      }
+      assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");
+      return;
+    case BEFORE_EXIT_DONE:
+      return;
+    }
+  }
+
+  // The only difference between this and Win32's _onexit procs is that
+  // this version is invoked before any threads get killed.
+  ExitProc* current = exit_procs;
+  while (current != NULL) {
+    ExitProc* next = current->next();
+    current->evaluate();
+    delete current;
+    current = next;
+  }
+
+  // Hang forever on exit if we're reporting an error.
+  if (ShowMessageBoxOnError && is_error_reported()) {
+    os::infinite_sleep();
+  }
+
+  // Terminate watcher thread - must before disenrolling any periodic task
+  WatcherThread::stop();
+
+  // Print statistics gathered (profiling ...)
+  if (Arguments::has_profile()) {
+    FlatProfiler::disengage();
+    FlatProfiler::print(10);
+  }
+
+  // shut down the StatSampler task
+  StatSampler::disengage();
+  StatSampler::destroy();
+
+  // shut down the TimeMillisUpdateTask
+  if (CacheTimeMillis) {
+    TimeMillisUpdateTask::disengage();
+  }
+
+#ifndef SERIALGC
+  // stop CMS threads
+  if (UseConcMarkSweepGC) {
+    ConcurrentMarkSweepThread::stop();
+  }
+#endif // SERIALGC
+
+  // Print GC/heap related information.
+  if (PrintGCDetails) {
+    Universe::print();
+    AdaptiveSizePolicyOutput(0);
+  }
+
+
+  if (Arguments::has_alloc_profile()) {
+    HandleMark hm;
+    // Do one last collection to enumerate all the objects
+    // allocated since the last one.
+    Universe::heap()->collect(GCCause::_allocation_profiler);
+    AllocationProfiler::disengage();
+    AllocationProfiler::print(0);
+  }
+
+  if (PrintBytecodeHistogram) {
+    BytecodeHistogram::print();
+  }
+
+  if (JvmtiExport::should_post_thread_life()) {
+    JvmtiExport::post_thread_end(thread);
+  }
+  // Always call even when there are not JVMTI environments yet, since environments
+  // may be attached late and JVMTI must track phases of VM execution
+  JvmtiExport::post_vm_death();
+  Threads::shutdown_vm_agents();
+
+  // Terminate the signal thread
+  // Note: we don't wait until it actually dies.
+  os::terminate_signal_thread();
+
+  print_statistics();
+  Universe::heap()->print_tracing_info();
+
+  VTune::exit();
+
+  { MutexLocker ml(BeforeExit_lock);
+    _before_exit_status = BEFORE_EXIT_DONE;
+    BeforeExit_lock->notify_all();
+  }
+
+  #undef BEFORE_EXIT_NOT_RUN
+  #undef BEFORE_EXIT_RUNNING
+  #undef BEFORE_EXIT_DONE
+}
+
+void vm_exit(int code) {
+  Thread* thread = ThreadLocalStorage::thread_index() == -1 ? NULL
+    : ThreadLocalStorage::get_thread_slow();
+  if (thread == NULL) {
+    // we have serious problems -- just exit
+    vm_direct_exit(code);
+  }
+
+  if (VMThread::vm_thread() != NULL) {
+    // Fire off a VM_Exit operation to bring VM to a safepoint and exit
+    VM_Exit op(code);
+    if (thread->is_Java_thread())
+      ((JavaThread*)thread)->set_thread_state(_thread_in_vm);
+    VMThread::execute(&op);
+    // should never reach here; but in case something wrong with VM Thread.
+    vm_direct_exit(code);
+  } else {
+    // VM thread is gone, just exit
+    vm_direct_exit(code);
+  }
+  ShouldNotReachHere();
+}
+
+void notify_vm_shutdown() {
+  // For now, just a dtrace probe.
+  HS_DTRACE_PROBE(hotspot, vm__shutdown);
+}
+
+void vm_direct_exit(int code) {
+  notify_vm_shutdown();
+  ::exit(code);
+}
+
+void vm_perform_shutdown_actions() {
+  // Warning: do not call 'exit_globals()' here. All threads are still running.
+  // Calling 'exit_globals()' will disable thread-local-storage and cause all
+  // kinds of assertions to trigger in debug mode.
+  if (is_init_completed()) {
+    Thread* thread = Thread::current();
+    if (thread->is_Java_thread()) {
+      // We are leaving the VM, set state to native (in case any OS exit
+      // handlers call back to the VM)
+      JavaThread* jt = (JavaThread*)thread;
+      // Must always be walkable or have no last_Java_frame when in
+      // thread_in_native
+      jt->frame_anchor()->make_walkable(jt);
+      jt->set_thread_state(_thread_in_native);
+    }
+  }
+  notify_vm_shutdown();
+}
+
+void vm_shutdown()
+{
+  vm_perform_shutdown_actions();
+  os::shutdown();
+}
+
+void vm_abort() {
+  vm_perform_shutdown_actions();
+  os::abort(PRODUCT_ONLY(false));
+  ShouldNotReachHere();
+}
+
+void vm_notify_during_shutdown(const char* error, const char* message) {
+  if (error != NULL) {
+    tty->print_cr("Error occurred during initialization of VM");
+    tty->print("%s", error);
+    if (message != NULL) {
+      tty->print_cr(": %s", message);
+    }
+    else {
+      tty->cr();
+    }
+  }
+  if (ShowMessageBoxOnError && WizardMode) {
+    fatal("Error occurred during initialization of VM");
+  }
+}
+
+void vm_exit_during_initialization(Handle exception) {
+  tty->print_cr("Error occurred during initialization of VM");
+  // If there are exceptions on this thread it must be cleared
+  // first and here. Any future calls to EXCEPTION_MARK requires
+  // that no pending exceptions exist.
+  Thread *THREAD = Thread::current();
+  if (HAS_PENDING_EXCEPTION) {
+    CLEAR_PENDING_EXCEPTION;
+  }
+  java_lang_Throwable::print(exception, tty);
+  tty->cr();
+  java_lang_Throwable::print_stack_trace(exception(), tty);
+  tty->cr();
+  vm_notify_during_shutdown(NULL, NULL);
+  vm_abort();
+}
+
+void vm_exit_during_initialization(symbolHandle ex, const char* message) {
+  ResourceMark rm;
+  vm_notify_during_shutdown(ex->as_C_string(), message);
+  vm_abort();
+}
+
+void vm_exit_during_initialization(const char* error, const char* message) {
+  vm_notify_during_shutdown(error, message);
+  vm_abort();
+}
+
+void vm_shutdown_during_initialization(const char* error, const char* message) {
+  vm_notify_during_shutdown(error, message);
+  vm_shutdown();
+}
+
+jdk_version_info JDK_Version::_version_info = {0};
+bool JDK_Version::_pre_jdk16_version = false;
+int  JDK_Version::_jdk_version = 0;
+
+void JDK_Version::initialize() {
+  void *lib_handle = os::native_java_library();
+  jdk_version_info_fn_t func =
+    CAST_TO_FN_PTR(jdk_version_info_fn_t, hpi::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));
+
+  if (func == NULL) {
+    // JDK older than 1.6
+    _pre_jdk16_version = true;
+    return;
+  }
+
+  if (func != NULL) {
+    (*func)(&_version_info, sizeof(_version_info));
+  }
+  if (jdk_major_version() == 1) {
+    _jdk_version = jdk_minor_version();
+  } else {
+    // If the release version string is changed to n.x.x (e.g. 7.0.0) in a future release
+    _jdk_version = jdk_major_version();
+  }
+}
+
+void JDK_Version_init() {
+  JDK_Version::initialize();
+}